19 (木)	10:57	05:08	22:13	15:14
	15cm	10cm	20cm	13cm
長潮 出 07:03 入 16:00 出 00:20 入 11:43

留萌（北海道）2030年12月19日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
12/19 00:00	15.8	↓-0.3
12/19 00:10	15.5	↓-0.3
12/19 00:20	15.1	↓-0.4	最大潮位差
12/19 00:30	14.8	↓-0.3
12/19 00:40	14.5	↓-0.3
12/19 00:50	14.2	↓-0.3
12/19 01:00	13.8	↓-0.4	最大潮位差
12/19 01:10	13.5	↓-0.3
12/19 01:20	13.2	↓-0.3
12/19 01:30	12.9	↓-0.3
12/19 01:40	12.6	↓-0.3
12/19 01:50	12.4	↓-0.2
12/19 02:00	12.1	↓-0.3
12/19 02:10	11.8	↓-0.3
12/19 02:20	11.6	↓-0.2
12/19 02:30	11.4	↓-0.2
12/19 02:40	11.2	↓-0.2
12/19 02:50	11.0	↓-0.2
12/19 03:00	10.8	↓-0.2
12/19 03:10	10.6	↓-0.2
12/19 03:20	10.4	↓-0.2
12/19 03:30	10.2	↓-0.2
12/19 03:40	10.1	↓-0.1
12/19 03:50	9.9	↓-0.2
12/19 04:00	9.8	↓-0.1
12/19 04:10	9.7	↓-0.1
12/19 04:20	9.6	↓-0.1
12/19 04:30	9.5	↓-0.1
12/19 04:40	9.4	↓-0.1
12/19 04:50	9.4	0
12/19 05:00	9.3	↓-0.1	干潮
12/19 05:10	9.3	0
12/19 05:20	9.4	↑0.1
12/19 05:30	9.4	0
12/19 05:40	9.5	↑0.1
12/19 05:50	9.6	↑0.1
12/19 06:00	9.7	↑0.1
12/19 06:10	9.8	↑0.1
12/19 06:20	9.9	↑0.1
12/19 06:30	10.1	↑0.2
12/19 06:40	10.3	↑0.2
12/19 06:50	10.5	↑0.2
12/19 07:00	10.7	↑0.2
12/19 07:10	10.9	↑0.2
12/19 07:20	11.1	↑0.2
12/19 07:30	11.3	↑0.2
12/19 07:40	11.6	↑0.3
12/19 07:50	11.8	↑0.2
12/19 08:00	12.0	↑0.2
12/19 08:10	12.3	↑0.3
12/19 08:20	12.5	↑0.2
12/19 08:30	12.8	↑0.3
12/19 08:40	13.0	↑0.2
12/19 08:50	13.2	↑0.2
12/19 09:00	13.4	↑0.2
12/19 09:10	13.6	↑0.2
12/19 09:20	13.8	↑0.2
12/19 09:30	14.0	↑0.2
12/19 09:40	14.2	↑0.2
12/19 09:50	14.4	↑0.2
12/19 10:00	14.5	↑0.1
12/19 10:10	14.6	↑0.1
12/19 10:20	14.7	↑0.1
12/19 10:30	14.8	↑0.1
12/19 10:40	14.8	0
12/19 10:50	14.9	↑0.1	満潮
12/19 11:00	14.9	0
12/19 11:10	14.8	↓-0.1
12/19 11:20	14.8	0
12/19 11:30	14.7	↓-0.1
12/19 11:40	14.6	↓-0.1
12/19 11:50	14.5	↓-0.1
12/19 12:00	14.4	↓-0.1
12/19 12:10	14.3	↓-0.1
12/19 12:20	14.1	↓-0.2
12/19 12:30	13.9	↓-0.2
12/19 12:40	13.8	↓-0.1
12/19 12:50	13.6	↓-0.2
12/19 13:00	13.5	↓-0.1
12/19 13:10	13.3	↓-0.2
12/19 13:20	13.1	↓-0.2
12/19 13:30	13.0	↓-0.1
12/19 13:40	12.9	↓-0.1
12/19 13:50	12.8	↓-0.1
12/19 14:00	12.6	↓-0.2
12/19 14:10	12.6	0
12/19 14:20	12.5	↓-0.1
12/19 14:30	12.4	↓-0.1
12/19 14:40	12.4	0
12/19 14:50	12.3	↓-0.1
12/19 15:00	12.3	0
12/19 15:10	12.3	0	干潮
12/19 15:20	12.3	0
12/19 15:30	12.3	0
12/19 15:40	12.3	0
12/19 15:50	12.4	↑0.1
12/19 16:00	12.4	0
12/19 16:10	12.5	↑0.1
12/19 16:20	12.6	↑0.1
12/19 16:30	12.7	↑0.1
12/19 16:40	12.8	↑0.1
12/19 16:50	12.9	↑0.1
12/19 17:00	13.0	↑0.1
12/19 17:10	13.2	↑0.2
12/19 17:20	13.3	↑0.1
12/19 17:30	13.5	↑0.2
12/19 17:40	13.7	↑0.2
12/19 17:50	13.9	↑0.2
12/19 18:00	14.2	↑0.3
12/19 18:10	14.4	↑0.2
12/19 18:20	14.7	↑0.3
12/19 18:30	14.9	↑0.2
12/19 18:40	15.2	↑0.3
12/19 18:50	15.5	↑0.3
12/19 19:00	15.7	↑0.2
12/19 19:10	16.0	↑0.3
12/19 19:20	16.3	↑0.3
12/19 19:30	16.5	↑0.2
12/19 19:40	16.8	↑0.3
12/19 19:50	17.0	↑0.2
12/19 20:00	17.3	↑0.3
12/19 20:10	17.5	↑0.2
12/19 20:20	17.7	↑0.2
12/19 20:30	17.9	↑0.2
12/19 20:40	18.1	↑0.2
12/19 20:50	18.3	↑0.2
12/19 21:00	18.4	↑0.1
12/19 21:10	18.6	↑0.2
12/19 21:20	18.7	↑0.1
12/19 21:30	18.8	↑0.1
12/19 21:40	18.9	↑0.1
12/19 21:50	18.9	0
12/19 22:00	19.0	↑0.1
12/19 22:10	19.0	0	満潮
12/19 22:20	19.0	0
12/19 22:30	19.0	0
12/19 22:40	18.9	↓-0.1
12/19 22:50	18.8	↓-0.1
12/19 23:00	18.7	↓-0.1
12/19 23:10	18.5	↓-0.2
12/19 23:20	18.3	↓-0.2
12/19 23:30	18.1	↓-0.2
12/19 23:40	17.9	↓-0.2
12/19 23:50	17.6	↓-0.3